JPH05249962A - Pitch bend control unit - Google Patents

Abstract

PURPOSE:To add a different pitch bend effect depending on the compass of a musical sound even to the displacement of a pitch bender by setting and storing a pitch bend width every compass of the musical sound, reading the pitch bend width to the compass belonging to a pitch when the pitch is designated, and changing the designated pitch on the basis of the pitch bend width and the displacement of the pitch bender. CONSTITUTION:A musical instrument panel 1 has a pitch information generating part 2 including a keyboard which generates the pitch information for designating the pitch of a musical sound generated by an electronic keyed musical instrument; and an operation panel part 3 consisting of various keys. When the pitch of the musical sound generated by adding a play operation to the keyboard of the pitch information generating part 2 is pitch-bent, various keys of the operation panel part 3 are operated in a preset mode so that a desired pitch bend width can be set independently every compass of the keyboard. Thus, a player can obtain a varied pitch bend effect by the displacement by the pitch bender operation and the set pitch bend width.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pitch bend control device for changing the pitch of a musical tone according to the displacement of a pitch bender.

[0002]

2. Description of the Related Art Heretofore, there has been known a pitch bend control device for changing the pitch of a musical sound to be produced by an electronic musical instrument in accordance with a displacement of the pitch bender within a pitch bend width which is a preset maximum pitch bend amount. ing. Generally, when performing a pitch bend of a musical tone of an electronic musical instrument using this type of pitch bend control device, it is assumed that a sound output that starts the pitch bend and an arrival sound that ends the pitch bend are assumed and the sound output of the sound is assumed, such as glissando or portamento. After sounding a musical tone, operate the pitch bender in either bend up or bend down direction to the maximum displacement position, and set the pitch of the output sound to the preset pitch bend width corresponding to the maximum displacement of the pitch bender. By pitch-bending only, the arrival sound of the target pitch is obtained.

However, in this type of pitch bend control device, only one pitch bend width is set uniformly for all musical ranges of musical tones to be produced by the electronic musical instrument. Therefore, as in the case of playing a guitar-type acoustic stringed instrument with choking technique and performing pitch bending, the pitch bending effect with a large amount of pitch bend is effective against the choking technique with the same force because the strings are thin in the high range. However, on the contrary, since the thickness of the strings is thick in the low tone range, the pitch bend effect with a small pitch bend amount cannot be obtained. Also,
Similarly, when performing a choking performance with the same force on the strings stretched from the head side to the bridge side of the stringed instrument, as in the case of playing a guitar type acoustic stringed instrument with choking performance and pitch bending, The pitch bend effect is the largest in the central part of the string, and the pitch bend amount is small as it gets closer to both ends of the string. In other words, no matter what tone range the pitch bender is displaced, only a fixed uniform pitch bend effect can be obtained regardless of the tone range, and there is a difference from the sense of the performer familiar with acoustic tones. There is a problem that it will occur.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to obtain a pitch bend control device capable of imparting different pitch bend effects depending on the range of a musical tone even with the same pitch bender displacement. To aim.

[0005]

SUMMARY OF THE INVENTION According to the present invention, the pitch bend width setting storage means sets and stores the pitch bend width for each musical tone range, and when the pitch is designated, the reading means causes the pitch bend width setting storage means to designate the pitch. The main point is to read out the pitch bend width corresponding to the tone range to which this belongs and to change the designated pitch by the pitch changing means based on the read pitch bend width and the pitch bender displacement.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. <Structure> First, the structure of this embodiment will be described. FIG. 1 is an overall circuit configuration diagram of an electronic keyboard instrument to which the pitch bend control device according to this embodiment is applied. The musical instrument panel 1 includes a pitch information generating section 2 including a keyboard for generating pitch information for designating pitches of musical tones produced by an electronic keyboard instrument, a tone color selection switch for selectively setting tone colors of musical tones, and musical tone sounds. There is provided an operation panel section 3 including various keys for setting pitch bend information such as pitch bend width in pitch bend control for changing the pitch.

The CPU 4 which is the central processing unit in the microcomputer is connected to the pitch information generating section 2 and the operation panel section 3 described above, as well as a ROM (read only memory) 5 and a RAM (random access memory) 6 Are connected. The ROM 5 stores a program for the CPU 4 to perform a processing operation for controlling the operation of the entire circuit of the electronic keyboard instrument. RAM6 is C
It is for storing the data of the pitch bend information set in the operation panel section 3 under the control of the PU 4.

Further, the CPU 4 has a display section 7 for displaying pitch bend information such as a pitch bend width set by the ON / OFF operation of various keys on the operation panel section 3, and a musical tone signal generating section 8 for generating a musical tone signal.
And are connected. The tone signal generated by the tone signal generator 8 is emitted as a tone through the D / A converter 9, the amplifier 10 and the speaker 11.

The electronic keyboard instrument of this embodiment is a polyphonic instrument capable of simultaneously producing a plurality of musical tones.
The pitch information generated by the pitch information generating unit 2 is time-division multiplexed according to the number of polyphonics (the number of simultaneous sounds) of this electronic keyboard instrument. The pitch bend information added to the multiplier 33 by the selector 31 is also time-division multiplexed.

FIG. 2 is an explanatory view showing the arrangement of the main parts (the parts relating to the setting of pitch bend information) in the operation panel section 3 and the display section 7 of FIG. 1 on the instrument panel 1.
The mode setting key 20 is a key for switching and specifying the mode of this electronic keyboard instrument between a setting mode for setting pitch bend information and a performance mode for performing a normal performance, and the state in which the setting mode is specified is an LED (light emitting diode). ) 2
Displayed when 1 is lit. The numeric keypad 22 is a key for inputting and setting each decimal digit from 0 to 9,
A range (pitch bend width) for changing the pitch (pitch) of a musical tone designated by the pitch information generation unit is set for each musical range as one of pitch bend information. The keys corresponding to the numbers 1 to 7 of the numeric keypad 22 correspond to the note names C to B, respectively. Here, the pitch bend information includes tone range information for setting the pitch bend width for each tone range, and semitone (100 cent) information and cent information for setting the pitch bend width.

The pitch bend information display unit 24, which is the main part of the display unit 7 shown in FIG. 1, displays the contents of the set pitch bend information, and the data display unit 24-displays a 10-digit number. 1 and three LEDs for displaying the type of information, range LED 24-2, semitone LED 24-
3 and a cent LED 24-4. The up key 25 and the down key 26 are used to specify a range line of a divided range that can be currently input and set when setting the pitch bend width for each range.

The pitch bender 26 is an operator for designating an actual pitch bend amount based on preset pitch bend information. The type of the pitch bender 26 in this embodiment is a wheel type, and this wheel type usually has a displacement of the pitch bender 26 in the center, that is, a position where the amount of pitch bend is 0 (neutral position), and the pitch bender 26 is moved to the back by hand operation. When pressed and rotated, the amount of pitch bend increases in the bend up direction, when pulled forward, the amount of pitch bend increases conversely in the bend down direction, and when released, it returns to the center 0 position. ing.

The pitch bender 26 can be rotated in the direction of 360 ° in addition to this, for example, bend up and bend are performed in the left and right lateral directions, and the pitch modulation depth and the like can be varied in the up and down vertical directions. Various types are possible such as a stick type that can specify an effect in which both pitch bend and modulation are mixed at an angle position in the middle, a lever type that uses lateral change, and a slider type.

FIG. 3 is a diagram showing a main circuit configuration of the pitch bend control device applied to the electronic keyboard musical instrument shown in FIGS. 1 and 2, and those having the same reference numerals as those in FIGS. 1 and 2 are the same. The components are shown. The pitch bend information setting unit 30 includes the various keys described above relating to the setting of the pitch bend information on the operation panel 3 shown in FIGS. 1 and 2, and an electronic circuit portion connected to those keys.

To the range line selector 31, pitch information (key code) for designating the pitch of a musical tone is given from the pitch information generating section 2 under the control of the CPU 4, and pitch bend information is given in accordance with the given pitch information. The RA of FIG. 1 is divided into _n range lines L _{1 to} L _n by the setting operation of the setting unit 30.
Previously stored pitch bend information M6, i.e. range information K ₁ ~K _n, semitone information n ₁ ~n ₃ is a data pitch bend width corresponding to the n pieces of range information K ₁ ~K _n, and St. information CE _{1 to} CE _n are selectively read by the range line selector 31 under the control of the CPU 4.

The analog signal indicating the displacement of the pitch bender based on the operation of the pitch bender 26 is an A / D converter 32.
Is converted into a digital signal and applied to the multiplier 33, and is multiplied by the pitch bend width data corresponding to the selected range information K _{1 to} K _n added by the range line selector 31. The multiplication in the multiplier 33 is (n ·
100 + CE) x, where n is the number of semitones set by the pitch bend information setting unit 30 for each range line, C
E is the number of similarly set cents, and x is the amount of analog displacement of the pitch bender 26).

The output data of the multiplier 33 is the pitch information added by the pitch information generator 2 in the adder 34, that is, the original key code data whose pitch is designated by the key depression operation of the keyboard before the pitch bend. Is added to generate pitch information with a new pitch change. The output signal from the adder 34 is applied to the tone signal generator 8 to generate a tone signal having a pitch based on pitch-bented pitch information.

<Operation> Next, the operation of the embodiment having the above-mentioned configuration will be described with reference to FIGS. As a specific example, a case will now be described in which the pitch bend width of 5 semitones and 20 cents is set to the range C1-B3. First, the mode setting key 20 on the operation panel 1 is operated to switch and specify a setting mode for setting desired pitch bend information. In the setting mode, the LED 21 is lit and displayed, and then the up key 25 and the down key 26 are operated to set the pitch bend information.
For example, specify L ₁ . Then, the range LED 24-2 of the pitch bend information display section 24 is lit up and displayed. The pitch bend information is set by the pitch bend information setting unit 30 for each of the range lines L _{1 to} L _n.
Turn on the key corresponding to the number 1 (note name C) of 2 twice in a row, then turn on the key corresponding to the number 0 once, and turn on the keys corresponding to the numbers 7 and 2 in order. Then, when the enter key 23 is turned on, "1", "1", "-", "7", and "3" are sequentially displayed from the left side on the data display section 24-1, and "C1-B3" is displayed corresponding to each number. That is, the range information K ₁ is set in the _first range line L ₁ .

When the enter key 23 is turned on, a semitone LE
D24-3 is lit and displayed, and this range line L ₁
The semi-tone information n ₁ that determines the pitch bend width for the is set. Then, on the numeric keypad 24, turn on the key corresponding to the numeral 5, and further press the enter key 23.
When is turned on, "0" is displayed on the data display unit 24-1 after the previous display of "1""1""-""7""3".
To display to be "5", to set the semitone information n ₁ to be "5 semitones" to the first of the range line L _1.

Subsequently, the cent LED 24-4 is turned on to shift to a state in which cent data can be set. When the enter keys 23 are turned on after the keys corresponding to the numbers 2 and 0 are turned on in the numeric keypad 24 in sequence, the semitone information "0" and "5" are further displayed in the data display section 24-1.
Following the display of to display to be "2" and "0", to set up 20 cents of the St. information CE ₁ in the first of the range line L _1.

With such a setting, the pitch bend information setting section 30 ends up with respect to the _first range line L ₁ .
It means that the range information K ₁ from C1 to B3 and 5 semitones 20 cents are set as the pitch bend width. Further Subsequently, by repeating the same operation, each range information to the range line _{L 2 ~L n K 2 ~K n} , semitone information n ₂ ~n _n,
Setting the St. information CE ₂ ~CE _n.

Next, the operation when the mode setting key 20 is operated to switch to the performance mode will be described. C2 now
If the keyboard corresponding to (the tone name of the pitch corresponding to the frequency of 65.41 Hz is shown. The same applies below), the range line selector 31 causes the pitch information generator 2 to generate the pitch information corresponding to C2. (Key code) is received, the range line to which this pitch information belongs is selected from the range information K _{1 to} K _n set in the pitch bend information section 30, and the selected range line, in this case range information K ₁ (C1
-B3) belongs to the tone range line L _{1 and} the data of the pitch bend width of 5 semitones 20 cents previously set is multiplied by the multiplier 33.
Output to.

On the other hand, when the pitch bender 26 is operated, the displacement data x (for example, -1≤x≤1) corresponding to the operation.
Is converted into digital data by the A / D converter 32 and added to the multiplier 33. When the pitch bender 26 is moved to the bend-up side to the maximum displacement position, x = 1,
The multiplier 33 generates operation output data of (5 × 100 + 20) × 1 = 520 (cent). And adder 3
In 4, the key code data corresponding to C2 from the pitch information generating unit 2 is added with the data of 5 semitones and 20 cents,
New pitch information for changing the pitch of the musical tone of C2 by 5 semitones and 20 cents is generated, and the musical tone signal generating section 8 generates a musical tone signal having the pitch bend up pitch.
When the pitch bender 26 is operated in the reverse direction to the maximum displacement position in the bend down direction, a new musical tone signal in which the pitch of the musical tone of C2 is lowered by 5 semitones and 20 cents is generated.

As described above, according to the above-described embodiment, when the pitch of the tone pitch of the musical tone generated by applying the performance operation (key depression operation) to the keyboard of the pitch information generating section 2 in the performance mode is performed in advance, In the setting mode, a desired pitch bend width can be individually set for each musical range of the keyboard by operating various keys of the operation panel section 3. Therefore, the player can obtain different pitch bend effects depending on the displacement by the operation of the pitch bender 26 and the set pitch bend width by setting different pitch bend widths for each arbitrary range. For example, by setting the pitch bend width to a large value in the high range and setting it to a low range in the low range, and selecting the electric guitar tone color and operating the pitch bender 26, the width of the pitch bend changes depending on the range and the choking performance of the electric guitar is changed. A pitch bend effect similar to can be produced.

In the above embodiment, the wheel type is used as the pitch bender (bending operator) 26, but it is not limited to this type and other types as described above can be used. Further, although the present invention is applied to the electronic keyboard musical instrument in the above-mentioned embodiment, it can also be applied to other kinds of electronic musical instruments, and when applied to an electronic stringed musical instrument, for example, a fret switch provided on a fingerboard is used for pitch information. When applied to an electronic wind instrument, the pitch designation switch and the like correspond to the pitch information generating section 2.

In the above embodiment, in setting the pitch bend width, the pitch bend width is set so that the pitch increases or decreases when the pitch bender 26 is operated from the neutral position of bend 0 to the maximum displacement position. Pitch bender 2 without neutral position
When 6 is not operated at all and the operation is started from that position, the pitch gradually bends up or down (or down), and the width of bend up (or down) when operating to the maximum displacement position is the pitch bend. It may be width. However, with a pitch bender that does not have this neutral position, only either bend up or bend down is possible.

Further, the displacement amount of the pitch bender 26 is A /
The pitch bend width may be set on the basis of 1 bit by a method of how many cents are increased or decreased with respect to a change amount corresponding to 1 bit when converted into a digital signal in the D converter 32. Alternatively, the pitch bender 26 may be operated by a displacement range from +10 to -10, and the pitch bend width may be set by determining how many cent bends the pitch bender 26 is displaced by +1.

In the above embodiment, the pitch bend width is set not only in semitone units but also in cent units. However, the pitch bend width is not limited to such a setting and may be set in semitone units, for example. May be.

[0029]

As described above, according to the present invention,
The pitch bend width setting storage means presets and stores the pitch bend width for each tone range of the musical tone, and when a pitch is designated, the reading means responds to the tone range including the designated pitch from the pitch bend width setting storage means. The pitch bend width is read, and the specified pitch is changed by the pitch changing means based on the read data of both the pitch bent width and the pitch bender displacement. Therefore, it is possible to produce a pitch bend effect suitable for each range according to the displacement amount by the operation of the pitch bender. Further, it is possible to provide a pitch bend effect closer to the pitch bent playing method of a natural musical instrument, and it is possible to perform a bend operation that better matches the player's natural feeling.

[Brief description of drawings]

FIG. 1 is an overall circuit configuration diagram of an electronic keyboard instrument to which a pitch bend control device according to the present invention is applied.

FIG. 2 is a diagram showing an operation panel unit 3 arranged on the instrument panel 1 shown in FIG.
FIG.

FIG. 3 is a main circuit configuration diagram of a pitch bend control device in an electronic keyboard instrument to which the present invention is applied.

[Explanation of symbols]

 2 Pitch information generation section 3 Operation panel section 4 CPU 6 RAM 7 Display section 8 Musical tone signal generation section 20 Mode setting key 22 Numeric keypad 23 Enter key 24 Pitch bend information display section

Claims (1)

[Claims] 1. A pitch bend control device for changing the pitch of a musical tone according to the displacement of a pitch bender, wherein pitch bend width setting storage means for setting and storing a pitch bend width for each musical tone tone range, and when the pitch is designated Reading means for reading the pitch bend width corresponding to the range to which the designated pitch belongs from the pitch bend width setting storage means, and the designated pitch based on the pitch bend width read by the reading means and the displacement of the pitch bender. A pitch bend control device comprising: a pitch changing means for changing the pitch of the musical tone.